Modelform Meta 类中的 Django 1.6 error_messages 不起作用

Question

我正在使用 Django 1.6.2 和在 ModelForms as mentioned in this question 上的 1.6 版本中添加的新元选项，表单上的错误不像我设置的那样显示。

我的代码：

模型表单

class UserRegisterForm(forms.ModelForm):
    """A form for creating new users. Includes all the required
    fields, plus a repeated password."""
    password = forms.CharField(label='Password', widget=forms.PasswordInput)

    class Meta:
        model = MyUser
        fields = ('email','first_name','last_name')

        error_messages = {
            'email': {
                    'invalid': u"Hai",
                    'required': u"Sup",
            },
        }

    def save(self, commit=True):
        # Save the provided password in hashed format
        user = super(UserRegisterForm, self).save(commit=False)
        user.set_password(self.cleaned_data["password"])
        if commit:
            user.save()
        return user

模板

<div class="form-group emailgroup {% if form.email.errors %}has-error has-feedback{% endif %}">
      <label for="emailfield">Dirección de correo electrónico</label>
      <input type="email" class="form-control" id="emailfield" name="email" required placeholder="¿Cuál es tu dirección de correo electrónico?">
      {% if form.email.errors %}<span class="glyphicon glyphicon-remove form-control-feedback"></span>
      <span class="help-block">{{ form.email.errors }}</span>
      {% endif %}
</div>

请注意模板中我打印字段错误的以下几行。

{% if form.email.errors %}<span class="glyphicon glyphicon-remove form-control-feedback"></span>
      <span class="help-block">{{ form.email.errors }}</span>
{% endif %}

但我仍然收到预定义的错误消息。我做错了什么？

Answer 1

通常将错误消息定义为类属性，而不是在内部 Meta 中。接下来是为您的电子邮件字段设置一个干净的方法，如果给定的电子邮件无效，它将引发 ValidationError：

error_messages = {
    "invalid_email": "Email is invalid.",
}

def clean_email(self):
    email = self.cleaned_data["email"]

    # Check the content of email here
    ...

    # If not valid raise ValidationException referencing the predefined error message
    ...
    raise ValidationError(self.error_messages["invalid_email"], code="invalid_email",)

    # If valid return value
    return email